Epoxy looks like solvent pop

J

Jerry1964

Promoted Users
Sprayed 3 parts today they looked good as they were drying started to notice very fine almost like very fine sand in the epoxy doesn’t look like solvent pop but have never happened to me with epoxy before.
 
Jerry1964 said:
Sprayed 3 parts today they looked good as they were drying started to notice very fine almost like very fine sand in the epoxy doesn’t look like solvent pop but have never happened to me with epoxy before.
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More than likely dirt, trash etc. Solvent pop leaves a very small crater. I don't know if epoxy is even capable of solvent pop.
 
Has it been sitting a long time before use?
If so it may not have been stirred long enough to get everything properly dissolved. Never had this problem myself so not sure why it's happening to you?
 
Jerry1964 said:
Sprayed 3 parts today they looked good as they were drying started to notice very fine almost like very fine sand in the epoxy doesn’t look like solvent pop but have never happened to me with epoxy before.
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I get this all the time, maybe my activator is to old, I don't know but I usually sand it smooth
and go on and never had a problem.
Other brands of epoxy have done the same thing, and I only get it with epoxy, no other
primers or paints have it.
I've tried everything to strain it out, it's way to fine for any strainers I've found, like you said,
it's like fine sand, barely noticeable.
I don't think it's a problem.
 
Epoxy can do that if it's been exposed to below freezing temperatures for too long during storage.
 
crashtech said:
Epoxy can do that if it's been exposed to below freezing temperatures for too long during storage.
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Interesting, I know that's not my problem though,
I keep all my paint products in my basement in colder weather,
and even if I didn't, my garage never gets below freezing inside, maybe 40 in extreme cold.
Must be something else.
I don't use epoxy a lot so my activator can be more than a year old, maybe that?
I don't worry about it, I've been using it for years like that.
Always worked fine, I just have to lightly sand it first.
 
I had the same thing happen this week spraying black. I'll try to get a picture of it next time. In my case I'm guessing its an operator error, maybe poor atomization? I might try using my Iwata 400 and see what happens.
 
DanMcG said:
I had the same thing happen this week spraying black. I'll try to get a picture of it next time. In my case I'm guessing its an operator error, maybe poor atomization? I might try using my Iwata 400 and see what happens.
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Did you use waterborne wax and grease remover?

Don
 
MJM said:
What are you using to clean before epoxy?
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Bare metal I use solvent. If I use waterborne I let it dry overnight with some air flowing over it, especially body filler….

Keep in mind I’m just a backyard hack sharing my experience here….

Don
 
it has done it for years. i think its just the pigment clumps together a little. doesnt hurt anything
 
dhutton01 said:
Bare metal I use solvent. If I use waterborne I let it dry overnight with some air flowing over it, especially body filler….

Keep in mind I’m just a backyard hack sharing my experience here….

Don
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Thank you, dually noted. Oh and if you're a backyard hack (which I no you're not), then I'm a destroyer of all things good, lol
 
Jim C said:
it has done it for years. i think its just the pigment clumps together a little. doesnt hurt anything
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In my short time of using the epoxy, I agree with your statement. Sometimes I get those little spots. More times than not, I don't. Either way it doesn't bother me since it's either getting sanded, or being sprayed over with 2k.

My only concern with those little defects will be when spraying the epoxy as a sealer. Granted the sealer will be reduced so, I hoping that will solve any issues.
 
you know i have shot spi epoxy as sealer hundreds of times over the years and its never been an issue. not sure why. if it is little pigment clumps then maybe the reducer breaks everything apart again. who knows. i just know i have never had a problem with it
 
I use 125 micron strainers for sealer. Seems to have eliminated any concern about particles of any kind in the sealer.
www.gersonco.com

Gerson EliteTM Paint Strainers - 125 micron - Gerson

• “No touch” contamination-free storage and dispensing of strainers. • Pre-packed pods load directly into Elite Dispenser (color coded mesh only). • Automated production with triple-cleaned mesh assures highest level of filter purity. • Color-coded filter for easy identification of micron size...
www.gersonco.com
 
crashtech said:
I use 125 micron strainers for sealer. Seems to have eliminated any concern about particles of any kind in the sealer.
www.gersonco.com

Gerson EliteTM Paint Strainers - 125 micron - Gerson

• “No touch” contamination-free storage and dispensing of strainers. • Pre-packed pods load directly into Elite Dispenser (color coded mesh only). • Automated production with triple-cleaned mesh assures highest level of filter purity. • Color-coded filter for easy identification of micron size...
www.gersonco.com
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Saved your suggestion for later use.

Thank you,
 
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